linux-kernel - Re: [PATCH 0/7] net: dsa: add QCA AR8xxx switch family support\

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Message-ID: <20150529195955.GA2884@codeaurora.org>
Date:	Fri, 29 May 2015 12:59:55 -0700
From:	Mathieu Olivari <mathieu@...eaurora.org>
To:	Florian Fainelli <f.fainelli@...il.com>
Cc:	Andrew Lunn <andrew@...n.ch>, robh+dt@...nel.org,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	davem@...emloft.net, linux@...ck-us.net, gang.chen.5i5j@...il.com,
	jiri@...nulli.us, leitec@...ticky.com, fabf@...net.be,
	alexander.h.duyck@...el.com, pavel.nakonechny@...tlab.ru,
	joe@...ches.com, sfeldma@...il.com, nbd@...nwrt.org,
	juhosg@...nwrt.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 0/7] net: dsa: add QCA AR8xxx switch family support\

On Fri, May 29, 2015 at 12:58:12PM -0700, Florian Fainelli wrote:
> On 29/05/15 11:59, Andrew Lunn wrote:
> > On Fri, May 29, 2015 at 11:49:54AM -0700, Mathieu Olivari wrote:
> >> On Fri, May 29, 2015 at 04:00:01AM +0200, Andrew Lunn wrote:
> >>> FYI:
> >>>
> >>> I have patches which allow DSA to use two cpu interfaces. Seems to
> >>> work on my DIR665 with a Marvell Switch.
> >>>
> >>> I will post the patches as an RFC.
> >>>
> >>>   Andrew
> >>
> >> Does it require the switch CPU ports to support LAG or is it generic
> >> enough to allow switch partitioning?
> > 
> > When using tags, DSA by default partitions the switch. Each user port
> > is separate from other ports. lan4 will not bridge to lan1 unless you
> > either do it in software, or you implement the
> > .port_join_bridge/.port_leave_bridge/.port_stp_update methods of
> > dsa_switch_driver.
> > 
> > What it requires is that for each user port, you can configure what
> > cpu port it should use. Marvell devices have this ability, and at a
> > first look, it seems like SF2 does as well, but i will leave Florian
> > to answer definitively.
> 
> That's right, such configuration happens by using VLAN_CTL in the
> context of SF2, by default only Port <N> and CPU can talk to each other.
> Bridging ports involving putting them in the same domain, e.g: updating
> the VLAN_CTL bitmask to include all bridge members.

Similar here. That would work for ar8xxx too.

> -- 
> Florian
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